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Solvent Vapor Induced Film Formation of PS/AgNPs Composites Using Spectroscopic Techniques
ISSN: 2369 - 3355
Publisher: author
Solvent Vapor Induced Film Formation of PS/AgNPs Composites Using Spectroscopic Techniques
Indexed in
Technology and Engineering
ARTICLE-FACTOR
1.3
Article Basics Score: 3
Article Transparency Score: 2
Article Operation Score: 2
Article Articles Score: 3
Article Accessibility Score: 3
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International Category Code (ICC):
ICC-1802
Publisher: Lifescience Global Inc.
International Journal Address (IAA):
IAA.ZONE/2369108113355
eISSN
:
2369 - 3355
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Abstract
In this work, pyrene labeled polystyrene (PS) latex dispersions and silver nanoparticles (AgNPs) were mixed at different weight ratios of AgNPS in the range of 0-50 wt%. Powder (PS/AgNPs) films were prepared on glass substrates from these mixtures by the drop-casting method at room temperature. The fast transient fluorescence (FTRF) technique was used to monitor the film formation process of PS/AgNPs composites by measuring the fluorescence lifetimes of pyrene during vapor exposure. It was observed that pyrene lifetimes decreased as vapor exposure time, t increased obeying Stern-Volmer kinetic. The optical transmission (UVV) experiments showed that the transparency of the films decreased with increasing AgNPs content. Transparent films were produced for the composites with 0 to 20 wt % of AgNPs content. The Prager-Tirrel model was employed to FTRF and UVV data to obtain back-and-forth frequencies, ν, of the reptating PS chains during ...
